PNG and JPEG are two popular image file formats used on the web. While PNGs are great for images with transparent backgrounds and sharp edges, they tend to have larger file sizes when compared to JPEGs. JPEGs, on the other hand, are best suited for photographs and images with lots of colors, but they don’t support transparency. In this tutorial, we will be discussing how to convert PNG to JPEG using PHP.

Step 1: First, you need to have the GD library installed on your server. The GD library is a powerful image manipulation library for PHP that can be used for a variety of image-related tasks, including image conversion.

Step 2: Next, you will need to create a new PHP file and name it “png-to-jpeg.php”.

Step 3: In this file, you will need to include the following code:

  // Path to the PNG image
  $png_image = 'path/to/image.png';

  // Create a new image from the PNG
  $png = imagecreatefrompng($png_image);

  // Save the new image as a JPEG
  $jpeg_image = str_replace('.png', '.jpeg', $png_image);
  imagejpeg($png, $jpeg_image);
  // Output the new image
  header('Content-Type: image/jpeg');

This code uses the GD library’s imagecreatefrompng() function to create a new image from the original PNG file, and then uses the imagejpeg() function to save the new image as a JPEG. The new image is then outputted to the browser with the appropriate header.

You can adjust the quality level to your preference, but keep in mind that a lower quality level will result in a smaller file size but also a lower image quality.

By converting PNGs to JPEGs, you can significantly reduce the file size of your images without sacrificing too much quality. This can be especially useful for large images or for websites with lots of images. I hope this tutorial helps you in converting PNGs to JPEGs using PHP. Happy coding!”